JP3006922U - Dust remover and louver used in the dust remover - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a dust remover and a louver used in the dust remover having excellent dust removing performance while avoiding vibration due to uneven rotation of a fan while avoiding increase in power load. A processing path for a gas to be processed is formed in a casing 1, a suction fan 33 is provided in the processing path, and the casing is provided at an outer peripheral position on the lower side of the suction fan 33 in the flow direction of the gas to be processed. An adsorption filter 34 fixedly installed on the first side is provided, and a louver unit 11 that contacts the gas to be processed and changes its flow direction is provided at a position on the upstream side of the suction fan 33 in the flow direction of the gas to be processed. , The guide surface of this louver unit 11,
A cloth-like filter 2 which allows a part of the gas to be treated to pass therethrough and can collect dust in the gas to be contacted therewith.
It is composed of 8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is an improvement of a dust remover for removing dust from a gas to be treated, and a louver used in the dust remover, for treating a gas to be treated such as oil mist, oil smoke, gas containing dust or atomized gas. Regarding

[0002]

[Prior art]

 As this type of dust removing device, those described in the following [1] and [2] are conventionally known. [1] Equipped with a rotary filter that is coaxial with the suction fan, and collects it with a rotary filter that comes into contact with the air flow that is sucked in by the fan. The oil mist that has been made into oil droplets is blown to the outer peripheral direction by centrifugal force and another filter (See, for example, Japanese Utility Model Laid-Open No. 57-12214). [2] Equipped with a rotary filter coaxially arranged with the suction fan, a front filter is provided on the upstream side of the flow path from the fan, and the pre-filter is used to perform the first-stage oil mist trapping process. Dust in the air flow that has been passed and sucked is collected by a rotating filter, and is further blown to the outer peripheral direction by centrifugal force so that it is adsorbed to another filter (see, for example, JP-A-1-107822). ).

[0003]

[Problems to be solved by the device]

 According to the conventional technique described in the above [1], since the oil mist is directly collected by the rotating filter, the mass of the rotating filter partially changes considerably due to the attached oil mist, which causes uneven rotation. There is a problem that vibration is generated due to. According to the conventional technique described in [2] above, since a large amount of oil mist is collected by the front filter before being collected by the rotary filter, the occurrence of the rotation unevenness can be avoided to some extent. However, there is a problem in that the suction resistance in the fan increases and the power load increases as the trapping performance of the pre-filter increases, which is still insufficient. An object of the present invention is to obtain a dust remover having excellent dust removing performance while avoiding vibration due to uneven rotation of the fan while avoiding an increase in power load, and a louver used for the dust remover.

[0004]

[Means for Solving the Problems]

 The technical means of the present invention, which has been taken to achieve the above object, constitutes a processing path for the gas to be processed in the casing, and a suction fan is provided in this processing path. An adsorption filter fixedly installed on the casing side is provided at the outer peripheral position on the lower side, and the flow direction is changed by contacting the gas to be treated at a position on the upper side in the flow direction of the gas to be treated than the suction fan. A louver was provided, and the guide surface of the louver was composed of a cloth-like filter that allowed passage of a part of the gas to be treated and could collect dust in the gas to be contacted. Is. For the same purpose, the louver used in the above dust remover is configured to change the flow direction by contacting the gas to be processed passing through the processing path in the processing path of the gas to be processed formed in the casing. The louver is provided with a guide surface for the gas to be treated that allows the passage of a part of the gas to be treated that collides with the guide surface, and traps dust that is in contact with the gas to be treated. It is composed of a cloth-like filter with a collection function. For the same purpose, a plurality of louvers are provided side by side so as to guide the ventilation direction on the upper side of the gas to be treated, and a plurality of louvers are provided side by side so as to guide the ventilation direction on the lower side. And a cloth-like filter that is detachably attached to each of the mounting fixtures provided on the casing and the mounting fixtures. It is composed of and. Further, the cloth-like filter forming the louver used in the dust removing device of the present invention may be formed of a non-woven fabric material.

[0005]

[Action]

 The effect of taking the above technical means is as follows. That is, a louver is used as a dust removing means provided in the processing path of the gas to be treated, and the louver allows a part of the gas to be treated to pass through and collects dust in the gas to be contacted. Composed of possible cloth-like filters. Therefore, it does not increase the suction load by the fan so much, and also has a dust collection function that cannot be expected from a normal louver that has only the function of changing the ventilation direction. Further, since the filter provided on the lower side of the flow path than the suction fan is not provided integrally with the rotary shaft but is provided fixedly to the casing, even if dust is partially attached to the filter. However, this does not affect the balance of the rotating shaft.

[0006]

[Effect of device]

 Therefore, according to the present invention, it is possible to remove dust to some extent from the gas to be treated supplied to the suction fan side, while avoiding an increase in power load on the suction fan side. Moreover, it is possible to avoid the occurrence of vibrations due to uneven rotation of the fan. Further, according to the configuration of claim 2, since it has both the function of changing the direction of the air flow as the louver and the function of collecting dust as the filter, the object to be treated before being sent to the suction fan is combined. While having a dust collecting effect on gas, it is possible to avoid an increase in power load due to an increase in suction resistance at the fan. Furthermore, according to the configuration of the third aspect, it is possible to obtain a louver having a simple structure as the louver having both of the above functions.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. The dust remover of the present invention is provided with a treatment path inside the casing 1 for removing dust while passing the gas to be treated, and the treatment path sucked and introduced from the intake port 4 is introduced into the treatment path. A pretreatment unit 5 for removing relatively coarse dust in the treatment gas, and an intermediate treatment for imparting centrifugal force to the gas passing through the pretreatment unit 5 to remove medium dust in the gas to be treated. A section 6 and a final processing section 7 for removing fine dust in the gas that has passed through the intermediate processing section 6 are provided.

The casing 1 is configured by combining a pretreatment case 2 having a pretreatment unit 5 therein, and a main body exterior case 3 having an intermediate treatment unit 6 and a final treatment unit 7 therein. The pretreatment case 2 is configured to be detachable from the main body exterior case 3.

The pretreatment section 5 installed in the pretreatment case 2 includes a buffler unit 10 provided on the front surface of the pretreatment case 2 so as to face an intake port 4 for a gas to be treated, and a back side thereof. It is configured in combination with the louver unit 11 provided in the.

The baffler unit 10 is provided with a receiving surface 12A on the front side of a shallow plate-shaped barrier body 12 made of a metal plate, the receiving surface 12A colliding with the gas to be treated, and the receiving surface 12A is formed from an assembly of metal filaments. The first filter 13 is attached and configured. This barrier body 12 is provided with an annular hood 12B on the outer peripheral portion of its receiving surface 12A, and the gas to be treated introduced from the suction port 4 is formed into the shallow dish-shaped wall surface. When it collides with A, it is configured so as to provide resistance against the gas to be escaped to the radially outward side. Further, a discharge hole 14 is formed on the peripheral surface of the lower end of the annular hood 12B to allow the target gas to move downward, and the dynamic pressure of the target gas colliding with the receiving surface 12A is formed. Are configured to act downward. As a result, the large particles and coarse dust of the oil mist in the gas to be treated that have collided with the receiving surface 12A are captured by the first filter 13 and are also captured by the first filter 13. On the other hand, the gas to be treated is positively discharged from the discharge hole 14 by the downward dynamic pressure. Further, below the receiving surface 12A of the barrier body 12, there is formed a communication hole 16 for guiding the flow-down waste substance including the oil mist and the dust discharged from the discharge hole 14 to the lower first drain chamber 15. A drain 15A is provided on the bottom surface of the first drain chamber 15. The leg portion 12C of the barrier body 12 is integrally joined to the pretreatment case 2 on the bottom side of the pretreatment case 2 via a mounting plate 17 which also serves as a top plate of the first drain chamber 15.

As shown in FIGS. 3 to 5, the louver unit 11 has a vertical length from the ceiling wall of the pretreatment case 2 to the upper surface of the mounting plate 17 which also serves as the top plate of the first drain chamber 15, and the pretreatment. In an outer frame 18 having a lateral width that covers the entire lateral width of the case 2, a lattice-shaped louver 19, a demister 20, and a gutter-shaped louver 21 are provided in a state having an area over the entire cross section of the pretreatment case 2. And the sponge filter 22 are assembled in layers.

As shown in FIGS. 5 and 7, the lattice-shaped louver 19 is formed by stamping and molding a plate surface of a metal plate material with a predetermined width in a predetermined direction, and forming a large number of ventilation holes 23 over the entire plate surface. It is composed of a plurality of end plate-shaped plate members 19A, 19B and 19C on which the projecting projection pieces 24 are formed. Of the above-mentioned end plate members 19A, 19B, 19C, the first end plate member 19A located closest to the front is formed integrally with the outer frame 18. Then, the next second second end plate 19B is formed such that the longitudinal direction of the vent hole 23 is orthogonal to the direction of the end hole 23 of the first end plate 19A. The vent hole 23 of the third step-shaped end plate 19C is formed so as to also be orthogonal to the vent hole 23 of the immediately preceding second end plate 19B. The projecting projections 24 are all projected toward the lower side in the passage direction of the gas to be treated. In this embodiment, the projecting projections of the first front end plate-like plate material 19A are projected. The piece 24 obliquely projects downward and guides the gas to be processed obliquely downward, and the projecting projection piece 24 of the middle second end plate 19B projects obliquely rightward and laterally to the obliquely rightward side. In particular, the ejection projection piece 24 of the third third end plate 19C at the rearmost portion is configured to project obliquely upward to guide the gas to be processed obliquely upward.

The demister 20 provided on the back part of the third third end plate 19C and the back part of the sponge filter 22 is made of a metal mesh material having a mesh of about 5 mm and is configured to be highly air-permeable. .

The trough-shaped louver 21 contacts the gas to be processed passing through the processing path in the casing 1 and changes the flow direction of the gas to be processed. A large number of air guide guides 25 and 26 having a U-shaped cross section are arranged such that the open sides of the U-shape face each other and are displaced in the plane direction. Each of the baffle guides 25 and 26 is a rod-shaped mounting fixture 27 that is detachably and fixedly mounted on brackets 18A provided on the inner surfaces of the upper and lower ends of the outer frame 18, and the mounting and fixing thereof. The cloth-like filter 28 is detachably attached to each of the tools 27. As shown in FIGS. 6 and 8 (a) and (b), the cloth-like filter 28 is formed in an endless belt shape or a belt shape having bag-shaped portions at both ends, and is attached to the attachment fixture 27 by the attachment. The trough-shaped louver 21 is provided in a U-shaped cross section and constitutes a guide surface for the gas to be treated. Further, it is provided with a gas permeability that allows passage of a part of the gas to be treated that comes into contact with the guide surface, and a collecting function for adhering dust in the gas to be treated that comes into contact with the guide surface. In order to realize the air permeability and the dust collecting function, specifically, the cloth-like filter 28 is made of a polyester non-woven fabric.

Although the sponge filter 22 is a filter material having a mesh smaller than that of the demister 20 made of metal mesh, it has sufficient air permeability. A louver lid 30 provided with vertical and horizontal crosspiece members 29 forming the rear surface of the outer frame 18 is provided on the further back side of the sponge filter 22, and the lattice-shaped louver 19 and the cloth housed in the outer frame 18 are provided. The filter 28 and the sponge filter 22 are fixed to the outer frame 18 in a state in which they do not fall off to the back side.

In the louver unit 11 configured as described above, by removing the ceiling plate 2 A of the pretreatment case 2 or taking an open posture, the entire louver unit 11 is pulled out together with the outer frame 18 from the inside of the pretreatment case 2. be able to.

The main body exterior case 3 is provided with a vertical front chamber 31 having a large space in the vertical direction and a horizontal rear chamber 32 elongated in the horizontal direction inside. A suction fan 33 is arranged in the vertical front chamber 31, a drum-shaped adsorption filter 34 is arranged on the outer peripheral portion of the suction fan 33, and the vertical front chamber 31 and the horizontal rear chamber 31 are arranged. At the boundary with 32, a separate demister 35 is provided in a state of partitioning both chambers 31 and 32 to form an intermediate processing unit 6. Further, the horizontal rear chamber 32 is provided with a final processing unit 7 in which a final filter 36 is disposed.

The suction fan 33 of the intermediate processing unit 6 has a large number of air-blowing blades 39 standing upright on the front side of a rotating disk 38 integrally connected to the peripheral portion of the boss 37, and The protruding front end side of the wind blade 39 is integrally connected by a conical annular guide plate 40. In addition, an auxiliary air-breathing piece 41 with a small amount of protrusion is formed on the rear surface side of the rotating disk 38, and this auxiliary air-breathing piece 41 inserts the shaft for inserting the boss portion 37 of the main body exterior case 3. It is configured such that a small amount of outside air is sucked and introduced from the common opening 42. The suction fan 33 is preferably used usually at about 3000 to 4000 rpm, although it depends on the property of the gas to be treated. At the outer peripheral portion of the suction fan 33, a cylindrical foamed foam material is provided on the outside of the drum filter support frame 43 made of an annular mesh material so that the coarse meshes are arranged in order from the coarse mesh. Layered drum-shaped adsorbents 44, 45, 46 are provided. The drum filter support frame 43 has four mounting legs 47 and is bolted to the inner wall 48 on the rear surface side of the pretreatment case 2. In this mounted state, the drum-shaped adsorbents 44, 45, 46 are fixed in a state of being separated from both the inner wall 48 and the rear side casing vertical wall portion 50 provided with the separate demister 35. Therefore, it is possible to avoid direct contact with the oil mist that has been made into oil droplets that propagate on both walls.

In the separate demister 35, a vertical wall portion 50 that partitions the vertical front chamber 31 and the horizontal rear chamber 32 is formed with a ventilation opening 51 that connects the chambers 31 and 32, and the ventilation opening 51 portion is formed. It is configured by arranging a thin plate-shaped member made of metal fiber over the entire surface. In this separate demister 35, oil droplets that have propagated through the vertical wall portion 50 that separates the chambers 31 and 32, residual oil mist in the gas to be treated, or residual dust flow into the horizontal rear chamber 32. It is to suppress this. A second drain chamber 52 is provided at a position corresponding to the bottom of the vertical front chamber 31 below the ventilation opening 51 provided with the separate demister 35. A partition member 53 is provided on the upper surface so as to be positioned lower than the separate demister 35. The partition member 53 is made of punching metal or the like having a coarser mesh than the separate demister 35 so as to allow passage of a substance that has not passed through the separate demister 35 to the second drain chamber 52 side.

In the horizontal rear chamber 32, a large number of cloth-shaped filter elements 36a made of extremely fine fibers having a diameter of about 1 micron, which are called electric stone filters, are arranged along the flow direction of the gas to be treated. In order to remove almost any remaining little oil mist and fine dust by passing the gas to be treated between the filter element 36a of the final filter 36, which is configured by being installed. The final processing unit 7 is constructed. An upward exhaust port 8 for exhausting the processed gas to be processed is formed in the ceiling of the horizontal rear chamber 32, and an electric motor 9 for driving the suction fan 33 is formed on the lateral side of the exhaust port 8. Is placed and fixed. Further, on the bottom surface side of the horizontal rear chamber 32, a third drain chamber 54 for discharging oil components attached to the back surface side of the separate demister 35 and oil components attached to the inner wall of the horizontal rear chamber 32. And a punching metal 55 that forms the upper surface of the third drain chamber 54. A rear opening 56 that allows the final filter 36 to be taken in and out is formed on the rear surface side of the horizontal rear chamber 32, and a lid member 57 that covers the rear opening 56 is provided to open and close.

[Other Embodiments] (1) As the louver unit 11, in addition to the gutter-shaped louvers 21, a lattice-shaped louver 19, a metal mesh demister 20, and a sponge filter 22 are used in combination. It is not necessary to use the gutter-shaped louver 21 alone, and the gutter-shaped louver 21 may be used as a base in combination with another part of the gutter-shaped louver 21, or in combination with a completely different filter means. May be. (2) The cloth-like filter 28 constituting the gutter-shaped louver 21 is not limited to the one made of the non-woven fabric as shown in the above-mentioned embodiment, but an appropriate material such as a coarse cloth can be used.

In the claims of the utility model registration, reference numerals are given for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a sectional view showing the entire dust removing device.

FIG. 2 is an exploded perspective view showing the entire dust removing device.

FIG. 3 is an enlarged cross-sectional view around the louver unit.

FIG. 4 is a partial sectional view of the louver unit in the horizontal direction.

FIG. 5 is a partially cutaway rear view of the louver unit.

FIG. 6 is a perspective view showing an assembled state of a gutter-shaped louver.

FIG. 7 is a perspective view of a part of the end plate-like plate material viewed from a rear view.

FIG. 8 is a schematic sectional view of a cloth-like filter.

[Explanation of symbols]

 1 Casing 11 Louver unit 25, 26 Air guide body 27 Mounting fixture 28 Cloth-like filter 33 Suction fan 34 Suction filter

Claims (3)

[Scope of utility model registration request] 1. A processing path for a gas to be processed is formed in a casing 1, a suction fan 33 is provided in the processing path, and an outer peripheral position on the lower side of the suction fan 33 in the flow direction of the gas to be processed, An adsorption filter 34 fixedly installed on the casing 1 side is provided, and a louver unit 11 that contacts the gas to be processed and changes its flow direction is provided at a position on the upstream side of the suction fan 33 in the direction of the gas to be processed. Further, the guide surface of the louver unit 11 is constituted by a cloth-like filter 28 which allows a part of the gas to be processed to pass therethrough and can collect dust in the gas to be processed which comes into contact therewith. Dust removal device. 2. A louver arranged in a processing path of a gas to be processed formed in a casing 1 so as to change a flow direction by contacting a gas to be processed passing through the processing path, The guide surface for the gas to be treated of this louver,
The cloth-like filter 28 is provided with a breathability that allows passage of a part of the gas to be treated that collides with the guide surface, and a collecting function to collect dust in the gas to be contacted. Louver for dust remover. 3. A plurality of said louvers arranged in parallel so as to guide the ventilation direction on the upper side of the gas to be treated.
5 and a plurality of air guide guides 26 arranged in parallel so as to guide the air flow direction on the lower side, and the respective air guide guides 25 and 26 are provided in the casing 1. The louver of the dust remover according to claim 1 or 2, comprising a mounting fixture 27 and a cloth-like filter 28 detachably attached to the mounting fixture 27.